US2678237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for supporting and conveying materials
Assignee: Svenska Flaktfabriken AB
•
Filing: 1948-09-13
•
Granted: 1954-05-11
•
Expires: 1968-09-13
Abstract
No abstract record available.
Inventors
- 👤 Claes G Allander
- 👤 Sven W Wallin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
B; B65; B65G; B65G51/00; B65G51/02; B65G51/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US544969A
Cited
US662574A
Cited
US756600A
Cited
US898775A
Cited
US994144A
Cited
US2176307A
Cited
US2538972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |